Server crashed while away. What's a good way to remote power off/on?

Just left for a 4 day trip, and - it figures - my unRAID server has just crashed. This happens every few months - and I haven't been able to figure out why, so I just power it down and up again when it happens. This is the first time it's happened when no one is home or around to do this for me.

I see this at Amazon, that supposedly would let me issue a power down / power up command remotely. Is this what I need? I guess I could just get a cheap Tapo or similar plug and use that?

Going to be a frustrating 4 days with no Jellyfin, Immich, Navidrome, and the rest of my services...

Thanks for the advice.